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Which expression represents the percent by mass of nitrogen in NH4NO3? A) 14 g N/80 g NH NO 100% B) 28 g N/80 g NH NO 100% C) 80 g NH NO /14 g N 100% D) 80 g NH NO /28 g N 100%
to scale-forming water to convert calcium carbonate to calcium bicarbonate. write the chemical equation for this reaction.
What is the total sample size (in grams) for a sample of disulfur octoxide which contains 3.29 g of oxygen
The reaction will be spontaneous at high temperatures because increasing the temperature of a system with a negative change in S eventually results in a positive change in G.
A 2 mL solution containing 1.40 uCi/mL is injected into the blood stream of a patient. After dilution, a 1 mL sample is withdrawn and found to have an activity of 2.9 * 10-4uCi. Calculate the blood volume,
Calculate the partial pressure (in atmospheres) of each gas, Assuming that the total pressure of the gases is 1.34atm{rm atm} and that their mole ratio is 94 : 4.0 : 1.5 : 0.50,
What is the formula that relates the temperature change obsereved in a substance with the energy released or abosrbed? when you measure a temperature rise during a chemical reaction, is the reaction endothermic or exothermic?
The equilibrium constant Kc equals .0952 for the reaction at 227C CH4OH(g) CO(g)+ 2H2(g). wHAT us the value of KP at this temperature
structure of the substance to be used in this experiment to initiate free radical chain chlorination
Consider a two state system with a difference in energy of 200 cm^-1. What is the temperature of the system if there are 5 particles in the ground state and 10 in the excited state
when 100g Mg3N2 reacts with 75.0g H20, 15.0g of NH3 is formed. What is the percent yield? Mg3N2+6H2O-->3Mg(OH)2+2NH3
list three acid, bases, and salt commonly used in therapeutic processes.
Calculate the quantity of heat energy in kilocalories evolved when 75 g of liquid water forms ice at 0 0C. (heat of solidification = 80 cal/g).
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